6O SHIPPING PRACTICE It is curious to note that if the agreement states that freight shall be paid in advance and it is not paid, and the steamer meets with disaster before such payment is made, the carrier is entitled to sue the shipper for payment of advance freight. The most simple method of ascertaining whether freight is advance freight or not, is by finding who bears the insur- ance. If shipper insures the freight, it is advance freight; if shipowner bears the insurance, it is not advance freight. Great care should be taken in dealing with this last type of freight. Stoppage in transitu* The carrier has the right of stop- ping goods in transit if freight has not been paid when freight is to be paid within a stipulated time before delivery. He may instruct his master to hold or return the goods. Should the shipper himself have paid the freight and charges, and not have received payment from his con- signee who refuses to pay, or becomes insolvent or bank- rupt, he also may instruct the carrier to have the goods stopped until such a time as he may notify him of receipt of the charges, or if there is no chance of his consignee paying for the goods then he may instruct the carrier to return same to him. In this case back freight would be chargeable to the shipper.